831113 has 4 divisors (see below), whose sum is σ = 880020. Its totient is φ = 782208.

The previous prime is 831109. The next prime is 831139. The reversal of 831113 is 311138.

831113 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 311138 = 2 ⋅155569.

It can be written as a sum of positive squares in 2 ways, for example, as 573049 + 258064 = 757^2 + 508^2 .

It is a cyclic number.

It is not a de Polignac number, because 831113 - 2² = 831109 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 48889 = 831113 / (8 + 3 + 1 + 1 + 1 + 3).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 831091 and 831100.

It is not an unprimeable number, because it can be changed into a prime (831163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24428 + ... + 24461.

It is an arithmetic number, because the mean of its divisors is an integer number (220005).

2⁸³¹¹¹³ is an apocalyptic number.

It is an amenable number.

831113 is a deficient number, since it is larger than the sum of its proper divisors (48907).

831113 is a wasteful number, since it uses less digits than its factorization.

831113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48906.

The product of its digits is 72, while the sum is 17.

The square root of 831113 is about 911.6539913805. The cubic root of 831113 is about 94.0199520044.

The spelling of 831113 in words is "eight hundred thirty-one thousand, one hundred thirteen".